Structural health self-monitoring for controlled buildings with active mass dampers
In active control field,active mass damper(AMD)is one of the most popular devices that has been studied and applied in real structures with confirmed vibration control efficiency against wind-and earthquake loadings.Most of the past efforts emphasized the derivation of theories for control gains and the investigation of vibration control effectiveness of AMDs.This paper pays attention on the development of structural health monitoring(SHM)procedure of the building itself by using the equipped AMD system.For vibration-based SHM of a real structure,significant external forces,for instance,earthquakes or shakers,have to be available to excite the building to respond to a certain extent.The vibration response measurements of the structure can then be the input data for the followed SHM procedure.The idea of the present study is to utilize the AMD not only for vibration control but also for SHM of the building itself once the AMD can be an exciter of the building at any time.For this purpose,a methodology is developed to uncouple the dynamic properties of the primary building and the AMD system based on the complex eigenparameters of the coupled building-AMD system.The controlled gain can also be identified and can be used as an index of the health condition of the primary building.The protocol of AMD test forces and the relationship between the index and the frequency drop of the structure are also established.Results from numerical verifications show that the procedure can identify the condition of the structure.
active mass damper structural control structural health monitoring system identification technique
C.C.Chang J.F.Wang C.C.Lin
National Center for Research on Earthquake Engineering,Taipei,Taiwan Department of Civil and Disaster Prevention Engineering,National United University,Miaoli,Taiwan Department of Civil Engineering,National Chung Hsing University,Taichung,Taiwan
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
2559-2568
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）